clauder

# Debugging Memory Leak in a React Application

## Analysis
Based on the provided code and error logs, the memory leak is likely caused by an unintentional subscription to an event emitter that is never unsubscribed. This is a common issue in React applications that can lead to performance degradation and increased memory usage.

## Solution
To fix this issue, follow these steps:

1. **Identify the source of the leak**:
   ```javascript
   // In your component, look for event listeners or subscriptions
   useEffect(() => {
     const subscription = eventEmitter.on('event', handler);
     return () => subscription.unsubscribe(); // Cleanup function
   }, []);
   ```

2. **Implement cleanup**:
   - Ensure that all subscriptions are properly unsubscribed in the cleanup function of the `useEffect` hook.
   - Use the `useEffect` hook's return function to handle cleanup.

3. **Test the fix**:
   - Run your application and monitor memory usage using browser developer tools.
   - Verify that the memory usage stabilizes and does not grow indefinitely.

## Best Practices
- Always clean up subscriptions and event listeners in React components.
- Use the `useEffect` hook's cleanup function to manage side effects.
- Consider using libraries like `react-use` for more robust event handling.